E4 board is the smallest 3D printer control board based on ESPRESSIFs ESP32 microcontroller, with built-in Wi-Fi and BluetoothController speed is up to 240MHz, 16M flash memoryNative Wi-Fi support, 12V to 24V input power, 3 power outputs and 3 5V outputs4 **TMC2209** stepper drives: X, Y, Z and E axisOnboard TF card slot, CH340 is used for high-speed USB serial connectionX, Y and Z minute end points; also supports sensorless homingAllows the use of Z-axis probes operating with input supply voltage (12V to 24V) or 5V, such as inductive sensorsControllable fan, you can choose power supply voltage (12/24V) or 5V voltage for itXh2.54 connector, firm and easy to insertSpecification:Product name: E4 V1.0 ESP32 motherboardAdapted models: for Creality Ender-3 /cr10Power input: 12-24VSize: 90mm x 67mmColour:blackMaterial:plasticPackage Contents:1 * E4 V1.0 ESP32 motherboard1 * USB cableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.